'''
while(1):
    age=int(input("请输入学生年龄："))
    if age>=18:
        print("已成年")
    elif age<18:
        print("未成年")
        

a=int(input("请输入第一条边"))
b=int(input("请输入第二条边"))
c=int(input("请输入第三条边"))
if a+b>c and a+c>b and b+c>a:
    print("能构成三角形，面积为：",1/2*(a+b+c))
else:
    print("不能构成三角形")

a=int(input("请输入第一个数"))
b=int(input("请输入第二个数"))
c=int(input("请输入第三个数"))
print("max=",max(a,b,c))

i=1
s=0
while i<=100:
    s+=i
    i+=1
print("s=1+2+3+......+100=",s)

s=0
for i in range(1,101):
    s+=i
print("s=1+2+3+......+100=",s)

for q in range(1,10):
    for w in range(1,q+1):
        print(w,"*",q,"=",q*w,"",end="")
    print("")
'''
print('Hello,world')
name=input('what is your name?')
print('Hello，'+name+'!')
from turtle import *
forward(100)
left(120)
forward(100)
left(120)
forward(100)
